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Kerala DHSE Plus Two Laws of Motion — practice questions

Explore 30 free Laws of Motion questions in Kerala DHSE Plus Two Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Laws of Motion questions and exercises with answers

Showing questions 1–30 of 30.

A bus brakes hard and the standing passengers lurch forward. The property of matter behind that lurch is:Read the answer and worked solution →A textbook defines that property in two words: resistance to:Read the answer and worked solution →Rolling balls down inclined planes to work out how motion really behaves was the method of:Read the answer and worked solution →The older view that a body needs a constant push just to keep moving is described as:Read the answer and worked solution →A trolley on a level floor is pushed and then released. If no net external force acted, its acceleration would be:Read the answer and worked solution →The same law read backwards says acceleration can be non-zero only when there is a net external:Read the answer and worked solution →A 2 kg trolley moves at 3 m/s. Multiplying its mass by its velocity gives its:Read the answer and worked solution →Because velocity has a direction as well as a size, momentum is a:Read the answer and worked solution →A cricketer catches a fast ball and pulls his hands back as he does so. This lengthens the stopping time, which makes the force needed:Read the answer and worked solution →Stated generally, the greater the rate of change of momentum, the greater is the:Read the answer and worked solution →An engineer records a force in SI units. That unit is the:Read the answer and worked solution →A hammer strikes a nail for a few milliseconds. Force multiplied by that short time duration gives the:Read the answer and worked solution →A very large force acting for a very short time is described as an:Read the answer and worked solution →In the third law, the words action and reaction are said to mean nothing else but:Read the answer and worked solution →Two railway wagons collide and couple together. The standard application of conservation of momentum here is the study of a:Read the answer and worked solution →A book lies still on a table. Balancing its weight is an upward push from the table called the:Read the answer and worked solution →A crate is pushed but does not budge. The surface force that cancels the push is called:Read the answer and worked solution →The friction acting before an object begins to slide is distinguished from the friction acting once it moves. The first is called:Read the answer and worked solution →The constant of proportionality linking maximum static friction to the normal force is the coefficient of:Read the answer and worked solution →Experiments show that the coefficient for a sliding object compares with the one for a stationary object as:Read the answer and worked solution →A ring or sphere rolling without slipping touches the ground at just one point at a time. In principle it suffers:Read the answer and worked solution →A stone is whirled on a string. The inward force keeping it on its circle is the centripetal force, supplied here by the:Read the answer and worked solution →Catch the force wordsRead the answer and worked solution →Pop the motion ideasRead the answer and worked solution →Run the motion gatesRead the answer and worked solution →Slice the mechanics wordsRead the answer and worked solution →Balanced or unbalancedRead the answer and worked solution →Sort the motion wordsRead the answer and worked solution →Type the numberRead the answer and worked solution →Laws of motion bingoRead the answer and worked solution →

Worked practice questions

A bus brakes hard and the standing passengers lurch forward. The property of matter behind that lurch is:

  1. Inertia
  2. Impulse
  3. Induction
  4. Insulation
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Correct answer: A. Inertia

1. The passengers were moving with the bus before the brakes bit. 2. Nothing pushed them forward, so they simply carried on as they were. 3. That resistance to any change of state is inertia. _Source: syllabus Physics Part I, Chapter 5, Laws of Motion._

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A textbook defines that property in two words: resistance to:

  1. Weight
  2. Change
  3. Water
  4. Wear
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Correct answer: B. Change

1. A body at rest will not start moving on its own. 2. A body already moving will not stop or turn on its own either. 3. Both cases are the same idea: resistance to change. _Source: syllabus Physics Part I, Chapter 5, Laws of Motion._

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Rolling balls down inclined planes to work out how motion really behaves was the method of:

  1. Galileo
  2. Kepler
  3. Aristotle
  4. Ptolemy
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Correct answer: A. Galileo

1. He needed to slow motion down enough to measure it. 2. An inclined plane does exactly that, diluting gravity. 3. That experimenter was Galileo, and the law of inertia was inferred from his work. _Source: syllabus Physics Part I, Chapter 5, Laws of Motion._

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